Adding Slope

For things like walls along water/near bridges, I hate having to place my watchtowers at swamp level, not having barracks on a more raised level, etc. Would it be possible to make a feature to ADD elevation, at a huge (HUGE!) cost in labor and possible material costs as well? “Raised foundation” maybe?

Many people have asked for this, myself included, but elevation in this game has no effect on movement or range.

Damage and aesthetics only; I would want range dependent on elevation as well as arrows to arc rather than fly flat and straight, but that’s been asked multiple times already. I use watchtowers for boar hunting and bear defense only, but just don’t like being only able to lower terrain. A “raised foundation” is a nice ask.